COMMENT ON PROJECTION

Adds, revises, or removes a comment on a projection. Each object can have one comment. Comments are stored in the system table COMMENTS.

Dropping an object drops all comments associated with the object.

Syntax

COMMENT ON PROJECTION [[database.]schema.]projection IS { 'comment' | NULL }

`[database.]schema`	Specifies a schema, by default `public`. If schema is any schema other than `public`, you must supply the schema name. For example: myschema.thisDbObject If you specify a database, it must be the current database.
projection	The name of the projection associated with the comment.
comment	Specifies the text of the comment to add. If a comment already exists for this projection, the comment you enter here overwrites the previous comment. Comments can be up to 8192 characters in length. If a comment exceeds that limitation, Vertica truncates the comment and alerts the user with a message.
`NULL`	Removes an existing comment.

Superuser or object owner

The following example adds a comment to the customer_dimension_vmart_node01 projection:

=> COMMENT ON PROJECTION customer_dimension_vmart_node01 IS 'Test data';

The following example removes a comment from the customer_dimension_vmart_node01 projection:

=> COMMENT ON PROJECTION customer_dimension_vmart_node01 IS NULL;